demo.rraBattleScene
Class BridgeServer

Takes requests for sonar pings from BattleScene and passes them to PingServer,
then receives VRML from the PingServer and returns it to BattleScene.

Since calculation of numerous ray trajectories is extremely time intensive, rendering and
ray tracing need to be on separate computers. This provides an interface from the rendering methods
to the ray tracing methods. The use of this intermediate bridge avoids the security
issues that are present in most browsers.